Forging mechanism



Aug. 9, 1927.

F. A. HALLECK FORGI NG MECHANI SM Filed April 5, 1922 1 F- W4. ad

of Fig. i.

Patented Aug. 9, 1927.

,Umrsn STATES PATENT OFFICE.

FRANK A. HALLECK, OF CHICAGO, ILLINOIS, ASSIGNOR ,TO SULLIVAN MACHINERYCOMPANY, A CORPORATION OF MASSACHUSETTS. I

FORGING MECHANISM.

Application filed April 5,

My invention relates to forging mechanisms, and more particularly togaging mechanisms for imparting to rock drill steels accurate gage and aparticular conformation at their forward ends which has been found mostdesirable in practice' An object of my invention is to provide animproved forging mechanism. Another object of my invention is to providean improved gaging die mechanism. A further object of my invention is toprovide an improved gaging mechanism for use in the sharpening of drill,steels. object of my invention is to provide an improved hammer gagingmechanism for accurately imparting to the forward end of drill steels aspecial conformation and an accurate gage. A still further object of 'myinvention is to provide improved gaging mechanism having improved meansassociated therewith for insuring the formation of bits of accurategage. Other objects and advantages of my invention will hereinafter morefully appear.

In the accompanying drawings I have shown for purposesof illustrationone form which my invention may assume in practice. p

In these drawings, a

Fig. 1 is a front elevation of a pairv of dies and the adjusting stopmember consti tuting the illustrative form of my invention, a. fragmentbeing brokenaway to show a detail of construction. 7

Fig. 2 is a section on theline 2-2 of Fig.1.

Fig. 3 is a sectionon the line 3+3 of Fig. 1, with parts shown indifferent positions.

Fig. & is a. front elevation of the stop member removed from itsoperative posi tion.

Fig.5 is a. section taken on the line- 5-5 It is a well known fact thatrock drill bits are usually sharpened by a hammering process combinedwith a dollying process. For the'purpose of forming .thewings of thebits, swaging dies, illustrated herein at 1 and 2 are commonly used,these dies being provided with swaging surfaces 3 and 4. re-

A still further.

1922. Serial No. 549,897.

spectively, and grooves 5 and 6 to receive the more or less finishedwings. These dies 1 and 2 are ordlnarily mounted in a drill sharpenerwith the die 2 secured in an anvil block while the die 1 is eitherpositively reciprocated or hammered while in enin gage betweensuccessive steelsto be used in drilling, it is desirable to provideaccu-. rate means for forming true reaming edges on drill steels and topermit without excessive consumption of time the accurate gaging of thesteels.

For the purpose of simply accomplishing these desirable results Iprovide, herein upon the dies 1 and 2. gaging surfaces-9 and 10,

which surfaces will be noted to be of flatter transverse curvature attheir forward ends than-at their rearward ends, the forward ends beingindicated at 11 and the rearward ends at 12. It will further be notedfrom observation of Fig. 1 that the curvature at the ends of the gagingsurfaces is flatter than, or lies outside of, circles correspond ing tominimum and maximum gages of steels which may be worked therein. thesecircles being markedA and B and the former coinciding with the outlineof the stop hereinafter referred to. As a result of this construction.it will be found possible to form bits which have reaming edges lying incylindrical surfacescorresponding to the gages of the different bitsand, as at the extremes-of the surfaces 9 and 10, the onwatures areflatter than the maximum and minimum gag-es, obviously at intermediatepoints the same condition will prevail.

Now for the purpose of locating a bit accurately at different pointsalong the space between die surfaces 9 and 10 I provide arotating handle21,, cooperating with the" stop member 18 having a laterally pro cct:ing neck'l l -from which depends an arm la to which a nut herein. squarein outline shown attached at 16. This nut gllliiifd in a generallyrectangular channel 17 herein in a block l8 taste d to the s i V the die2 and a screw 19 fixed against lonertudinal movement as at 20 and havingthreaded portion 22 of the member; i

permit forward and backward movement ot the stop member 13 l'ietween thedies. The forward "face of the stop member is provided with recesses ofthe correct :ontour to receive the sharpened ends of drill hits thesegrooves being designated Since the stop member is supported with itscenter midway between the dies when the latter are in their mostproximate positions, it will be evident that the stop will accuratelyreceive and support any gage oi drill hit.

From the foregoing description the mod of Operation of this dev ce willhe readf apparent; When. it is desired to a small bit, the stop will beadjusted to a position nearly corresponding to that shown in 2. To gagea medium sized bit the stop will. be moved to a position as shownin'Fig. 3, while to gage a la? 'e s z'ul hit the stop will be movedstill 'li'urther to the right in Fig; 3. It will he noted that the taperotthe die surtaces 9' and 10 is flatter than the original taper of the"forward of the drill bit and accordingly butrela tively little metalneeds to be di placed to accurately gage the drill bits, and the forwardends of the drill bits are ve'n a ti: 4 r curvature than the supportingportions or the conical ends'ot the hits by means oi my improved gagingdie. It will be obvious thatrit desired. any suitable tori-n oi ndexmaybe employ-ed with the screw and nut mechanism, "as, for example bythe placing? of graduations upon the top oi the member 18 which supportsand guides the hlock 16. or by arranging suitable indexe to be driven byrotation of the crank 21. As these v v rious means will be readilyllDAGTK lKIOtl-'i l'fili the description. no illustration is p While Ihave in this application sp cifically described one to mwhieh myinvention may assume in practice. it will be u derstood that this formoi the same is shown for purposes of illustration and that the inventionmav be modified and embodied invarious other forms without departingl'roirn its spirit or the scope of the appended claims.

What I claim as new and desire to. secure by Letters Patent is: r

o to,

,rected towards the same.

ing means for one of saiddies, means for reciprocating the other of saiddies, a stop member movable between said dies, and a' support for saidstop member including a block secured thereto and a guide for said blocksecured to the side of one of said dies. 2. Gaging mechanism comprisingcooperating oppositely disposed dies eachhaving a gaging groove thereinof. curved section and of flatter trans-verse curvature at one end thanat the other, stationary supporting 1 means for one of said dies, meansfor reciprocating the other of said dies, an adjustable stopmemberdisposed between said dies, and. a support for said stop memberincluding a block secured thereto and a: mem her having a block, guidingchannel formed therein secured to the stationary one of said dies withthe/open side of said channel di- 3. Gaging mechanism comprisingcooperating dies having oppositely disposed gaging grooves formedtherein; said grooves'bei ng of curved section and of flatter transversecurvature at one end than at theother, stationary supporting means forone'o'fsaid dies, means for reciprocatingthe other of said dies, anadjustable stop memberdis posed between said dies, a support for saidstop member including a block' secured thereto and a member having ablock guiding channel formed therein and secured to one of said dies,and: means for adjusting said stop member including an adjustable screwand nut connection between the same and said member; r 4t. Gagingmechanism comprising cooper ating dies havingoppositely disposed gaginggrooves formed therein, said grooves being of curved section and offlatter transverse 1 point stationary supporting means for one otsaiddies, means for reciprocating the other of said dies, an adjustable stopmom'- her disposed between said dies, a s upportfor' said stop memberincluding a blo'clr secured thereto and a member having a' bloc-k guidii'rf ing channel formed therein and secured-to" one of said dies, andmeans for adjusting said stop member includin threads formed in saidhloclr and a rotatab y mou-nte'd screw 7 supported in said'member; 5.Gaging mechanism comprising cooper atin g dies having oppositelydisposed 'ga'gine' grooves formed thereimsaid grooves hei of curvedsection and of flatter transv e curvature at one end thana-tthe otherstaled tionary supporting means for one of said dies meansforreci'procating the othcr'oit said dies, an adjustable stop memberhaving" grooves formed in the rearwardly directed" face thereof toreceive the extremities of the wings of a drill steel to be gagedthereby disposed between said dies,:a support for said stop memberincluding a block secured thereto and a member having a block guidingchannelformed thereon and secured to one of said dies, and means foradjusting said stop member includingthreads formed in said block and arotatably mounted screw supported in said member.

6. Gaging mechanism comprising cooperating oppositely disposed dies eachhaving a gaging groove therein of curved section and of flattertransverse curvature at one end than at the other, stationary supportingmeans for one of said dies, means forreciprocating the other of saiddies, a stop member movable between said dies, and screw and nut meansfor adjusting said stop member disposed along a longitudinal side ofsaid dies.

7 Gaging mechanism comprising cooperating oppositely disposed dies eachhaving a gaging groove therein of curved section and of flattertransverse curvature: at one end than at the other, stationarysupporting means for one of said dies, means for reciprocating the otherof said dies, a stop member movable between said dies, and means foradjusting said stop member including a nut connected thereto and astationary screw disposed at one longitudinal side of and adjustablefrom infront of said dies.

8. Gaging mechanism comprising cooperating oppositely disposed dies eachhaving a gaging groove therein of curved section and of flattertransverse curvature at one end than at the other, stationary supportingmeans for one of said dies, means for reciprocating the other of saiddies, a' stop member movable between said dies, and;

means for adjusting said stop member in cluding a plurality of 'movableadjusting means disposed along one longitudinal side of said dies, oneof said movable means being rigidly connected to said stop.

9. Gaging mechanism comprising cooperating dies having relativelylongitudinally fixed gaging surfaces, stop means for a steel associatedwith said dies and movable relative to said surfaces, and means foradjusting said stop means disposed entirely at one longitudinal side ofsaid dies. 7

10. Gaging mechanism comprising cooperating gaging dies, stop means fora steel associated therewith, and means for adjusting'said stop meansincluding a'plurality of adjusting members movable along a longitudinalside of said dies while maintaining an operative relation to saidmechanisnn 11. Gaging mechanism comprising cooperating dies having agaging groove, said dies having an opening disposed along the side ofthe same and in communication with said groove when said dies are 1ncontact, stop element.

means disposed in said groove and having a portion projecting laterallythrough said opening, and means for supporting said. portion disposedentirely at one side of said dies.

12. Gaging mechanism comprising cooperating dies having a gaging grooveassociated therewith and provided with relatively longitudinally fixedgaging surfaces, adjustable stop means disposed within said groove,

means disposed only atone longitudinal side of said dies for supportingsaid stop means, and actuating means for said stop means in-' cluding amovable member disposed along said side.

18. Gaging mechanism comprising 'coope'ating dies having a gaging grooveassociated therewith and provided with relatively longitudinally fixedgaging surfaces,' adjustable stop means disposed therein, a memberrigidly fixed to said stop, and ro-- tatable meanscooperating with saidmem ber and adapted upon rotation said stop means.

15%. Gaging mechanism comprising cooperating dies having a gaging grooveasso ciated therewith, adjustable stop means disposed therein, meansproviding a guiding to adjust groove and a guided member therein forsupporting said stop means, and means for adjusting said latter meansincluding rotatable and reciprocable members one of which has a portiondisposed within said groove.

15. Gaging mechanism comprising cooperating gaglng dies having anopening in the side thereof, stop means associated with said diesincluding an arm extending through said opening and carrying a-nut, anda screw for said nut for adjusting said stop'means. I o

16. Gaging mechanism comprising coopcrating gaging dies having anopening in the side thereof, stop means associated with said diesincluding an arm extending through said opening and carrying a nut,

and a screw therefor disposed substantially tioning abutmentelementhaving a portion adapted to engage a steel and another portionhaving an opening extending parallel, to the longitudinal axis of saidsteel engaging portion adapted to cooperate with relatively movableactuating means the movement of which imparts movement to said 18.Gaging mechanism comprising cooperating relatively longitudinally fixedgaging dies, adjustable stop means associated therewith, and means forsupporting and holding said stop means in any adjusted po sition thereofdisposed along the side of said dies, said means including an elementdisposed along said side and over which said stop means is movable.

1 Gagi'ng' mechanism comprising cooperating relativelylongitu dinallyfixed gag- 6 ing dies, adjustable stop means associated therewithand:means for supporting and hokling said stop means in any adjustedposition thereof disposed; along the side of'said dies, said meansincluding an apertured arm and it shaft extending therethrough along 10which said stop means moves.

In testitnoliyvl1ereof I affix my signature.

FRANK A. HALL-ECK;

